Regular Expression to change Title?

I have many Title-Tags like for example "King (CD - WOW Hits 2006)" I want to remove the CD-Description or even better move it to comment or album-field.
I think it must be possible to use "Replace with regular Expression" to remove the CD xxxx including the sourounding Brackets. (Sometimes the title is also without closing brackets).
How can I do this?

You can use an action Guess values

Action #1:
Action type: Guess values
Source format: %title%
Guessing pattern: %title% (%comment%)